Use app×
Join Bloom Tuition
One on One Online Tuition
JEE MAIN 2025 Foundation Course
NEET 2025 Foundation Course
CLASS 12 FOUNDATION COURSE
CLASS 10 FOUNDATION COURSE
CLASS 9 FOUNDATION COURSE
CLASS 8 FOUNDATION COURSE
0 votes
276 views
in Trigonometry by (32.1k points)
closed by

Evaluate each of the following:

cot2 30° - 2 cos2 60° - \(\frac{3}4\)sec2 45° - 4 sec2 30°

1 Answer

+1 vote
by (32.2k points)
selected by
 
Best answer

cot2 30° - 2 cos2 60° - \(\frac{3}4\)sec2 45° - 4 sec2 30°

\((\sqrt3)^2\) - 2\((\frac{1}2)^2\) - \(\frac{3}4\) x \((\sqrt2)^2\) - 4\((\frac{2}{\sqrt3})^2\)

= 3 - \(\frac{1}2\) - \(\frac{3}2\) - \(\frac{16}3\) = - \(\frac{13}3\)

Welcome to Sarthaks eConnect: A unique platform where students can interact with teachers/experts/students to get solutions to their queries. Students (upto class 10+2) preparing for All Government Exams, CBSE Board Exam, ICSE Board Exam, State Board Exam, JEE (Mains+Advance) and NEET can ask questions from any subject and get quick answers by subject teachers/ experts/mentors/students.

Categories

...